cpufreq: gps && rxerr: port=1 ch=0x24, rxs=0x00000001

Michael Trimarchi trimarchi at gandalf.sssup.it
Thu Jun 18 19:53:37 CEST 2009


Hi,

sorry forgive the cc at the end

Michael Trimarchi wrote:
> Hi
>
> cc: Ben Dooks
>
> Michael Trimarchi wrote:
>> Hi,
>>
>> Timo Juhani Lindfors wrote:
>>> Michael Trimarchi <trimarchi at gandalf.sssup.it> writes:
>>>  
>>>> it's exaclty the same. But after cpu clock change the serial is stable
>>>> or not
>>>> or always present this error.
>>>>     
>>>
>>> https://docs.openmoko.org/trac/ticket/2295
>>>
>>> should now have the details: just patching the kernel with cpufreq
>>> patches is enough to reproduce this, I do not need to actually change
>>> cpu frequency to make it occur.
>>>
>>>   
>> Thanks
>> Michael
>>
>>
> I look at the ticket. Is the order of restoring
> of clockdivn and mpllcon important?
>
> #ifndef CONFIG_CPU_FREQ
>        SAVE_ITEM(S3C2410_CLKDIVN),
>        SAVE_ITEM(S3C2410_MPLLCON),
>        SAVE_ITEM(S3C2410_REFRESH),
> #endif
>
> So basically if I'm not wrong first the code retake the clockdivn 
> value and the MPLLCON, but If I rembember the clkdivn must set after
> the mpllcon and take effect after a while. Is this correct?
>
> Michael
>
>




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